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-rw-r--r--unsupported/test/cxx11_tensor_expr.cpp314
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diff --git a/unsupported/test/cxx11_tensor_expr.cpp b/unsupported/test/cxx11_tensor_expr.cpp
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+++ b/unsupported/test/cxx11_tensor_expr.cpp
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+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include "main.h"
+
+#include <Eigen/CXX11/Tensor>
+
+using Eigen::Tensor;
+using Eigen::RowMajor;
+
+static void test_1d()
+{
+ Tensor<float, 1> vec1(6);
+ Tensor<float, 1, RowMajor> vec2(6);
+
+ vec1(0) = 4.0; vec2(0) = 0.0;
+ vec1(1) = 8.0; vec2(1) = 1.0;
+ vec1(2) = 15.0; vec2(2) = 2.0;
+ vec1(3) = 16.0; vec2(3) = 3.0;
+ vec1(4) = 23.0; vec2(4) = 4.0;
+ vec1(5) = 42.0; vec2(5) = 5.0;
+
+ float data3[6];
+ TensorMap<Tensor<float, 1>> vec3(data3, 6);
+ vec3 = vec1.sqrt();
+ float data4[6];
+ TensorMap<Tensor<float, 1, RowMajor>> vec4(data4, 6);
+ vec4 = vec2.square();
+ float data5[6];
+ TensorMap<Tensor<float, 1, RowMajor>> vec5(data5, 6);
+ vec5 = vec2.cube();
+
+ VERIFY_IS_APPROX(vec3(0), sqrtf(4.0));
+ VERIFY_IS_APPROX(vec3(1), sqrtf(8.0));
+ VERIFY_IS_APPROX(vec3(2), sqrtf(15.0));
+ VERIFY_IS_APPROX(vec3(3), sqrtf(16.0));
+ VERIFY_IS_APPROX(vec3(4), sqrtf(23.0));
+ VERIFY_IS_APPROX(vec3(5), sqrtf(42.0));
+
+ VERIFY_IS_APPROX(vec4(0), 0.0f);
+ VERIFY_IS_APPROX(vec4(1), 1.0f);
+ VERIFY_IS_APPROX(vec4(2), 2.0f * 2.0f);
+ VERIFY_IS_APPROX(vec4(3), 3.0f * 3.0f);
+ VERIFY_IS_APPROX(vec4(4), 4.0f * 4.0f);
+ VERIFY_IS_APPROX(vec4(5), 5.0f * 5.0f);
+
+ VERIFY_IS_APPROX(vec5(0), 0.0f);
+ VERIFY_IS_APPROX(vec5(1), 1.0f);
+ VERIFY_IS_APPROX(vec5(2), 2.0f * 2.0f * 2.0f);
+ VERIFY_IS_APPROX(vec5(3), 3.0f * 3.0f * 3.0f);
+ VERIFY_IS_APPROX(vec5(4), 4.0f * 4.0f * 4.0f);
+ VERIFY_IS_APPROX(vec5(5), 5.0f * 5.0f * 5.0f);
+
+ vec3 = vec1 + vec2;
+ VERIFY_IS_APPROX(vec3(0), 4.0f + 0.0f);
+ VERIFY_IS_APPROX(vec3(1), 8.0f + 1.0f);
+ VERIFY_IS_APPROX(vec3(2), 15.0f + 2.0f);
+ VERIFY_IS_APPROX(vec3(3), 16.0f + 3.0f);
+ VERIFY_IS_APPROX(vec3(4), 23.0f + 4.0f);
+ VERIFY_IS_APPROX(vec3(5), 42.0f + 5.0f);
+}
+
+static void test_2d()
+{
+ float data1[6];
+ TensorMap<Tensor<float, 2>> mat1(data1, 2, 3);
+ float data2[6];
+ TensorMap<Tensor<float, 2, RowMajor>> mat2(data2, 2, 3);
+
+ mat1(0,0) = 0.0;
+ mat1(0,1) = 1.0;
+ mat1(0,2) = 2.0;
+ mat1(1,0) = 3.0;
+ mat1(1,1) = 4.0;
+ mat1(1,2) = 5.0;
+
+ mat2(0,0) = -0.0;
+ mat2(0,1) = -1.0;
+ mat2(0,2) = -2.0;
+ mat2(1,0) = -3.0;
+ mat2(1,1) = -4.0;
+ mat2(1,2) = -5.0;
+
+ Tensor<float, 2> mat3(2,3);
+ Tensor<float, 2, RowMajor> mat4(2,3);
+ mat3 = mat1.abs();
+ mat4 = mat2.abs();
+
+ VERIFY_IS_APPROX(mat3(0,0), 0.0f);
+ VERIFY_IS_APPROX(mat3(0,1), 1.0f);
+ VERIFY_IS_APPROX(mat3(0,2), 2.0f);
+ VERIFY_IS_APPROX(mat3(1,0), 3.0f);
+ VERIFY_IS_APPROX(mat3(1,1), 4.0f);
+ VERIFY_IS_APPROX(mat3(1,2), 5.0f);
+
+ VERIFY_IS_APPROX(mat4(0,0), 0.0f);
+ VERIFY_IS_APPROX(mat4(0,1), 1.0f);
+ VERIFY_IS_APPROX(mat4(0,2), 2.0f);
+ VERIFY_IS_APPROX(mat4(1,0), 3.0f);
+ VERIFY_IS_APPROX(mat4(1,1), 4.0f);
+ VERIFY_IS_APPROX(mat4(1,2), 5.0f);
+}
+
+static void test_3d()
+{
+ Tensor<float, 3> mat1(2,3,7);
+ Tensor<float, 3, RowMajor> mat2(2,3,7);
+
+ float val = 1.0f;
+ for (int i = 0; i < 2; ++i) {
+ for (int j = 0; j < 3; ++j) {
+ for (int k = 0; k < 7; ++k) {
+ mat1(i,j,k) = val;
+ mat2(i,j,k) = val;
+ val += 1.0f;
+ }
+ }
+ }
+
+ Tensor<float, 3> mat3(2,3,7);
+ mat3 = mat1 + mat1;
+ Tensor<float, 3, RowMajor> mat4(2,3,7);
+ mat4 = mat2 * 3.14f;
+ Tensor<float, 3> mat5(2,3,7);
+ mat5 = mat1.inverse().log();
+ Tensor<float, 3, RowMajor> mat6(2,3,7);
+ mat6 = mat2.pow(0.5f) * 3.14f;
+ Tensor<float, 3> mat7(2,3,7);
+ mat7 = mat1.cwiseMax(mat5 * 2.0f).exp();
+ Tensor<float, 3, RowMajor> mat8(2,3,7);
+ mat8 = (-mat2).exp() * 3.14f;
+ Tensor<float, 3, RowMajor> mat9(2,3,7);
+ mat9 = mat2 + 3.14f;
+ Tensor<float, 3, RowMajor> mat10(2,3,7);
+ mat10 = mat2 - 3.14f;
+ Tensor<float, 3, RowMajor> mat11(2,3,7);
+ mat11 = mat2 / 3.14f;
+
+ val = 1.0f;
+ for (int i = 0; i < 2; ++i) {
+ for (int j = 0; j < 3; ++j) {
+ for (int k = 0; k < 7; ++k) {
+ VERIFY_IS_APPROX(mat3(i,j,k), val + val);
+ VERIFY_IS_APPROX(mat4(i,j,k), val * 3.14f);
+ VERIFY_IS_APPROX(mat5(i,j,k), logf(1.0f/val));
+ VERIFY_IS_APPROX(mat6(i,j,k), sqrtf(val) * 3.14f);
+ VERIFY_IS_APPROX(mat7(i,j,k), expf((std::max)(val, mat5(i,j,k) * 2.0f)));
+ VERIFY_IS_APPROX(mat8(i,j,k), expf(-val) * 3.14f);
+ VERIFY_IS_APPROX(mat9(i,j,k), val + 3.14f);
+ VERIFY_IS_APPROX(mat10(i,j,k), val - 3.14f);
+ VERIFY_IS_APPROX(mat11(i,j,k), val / 3.14f);
+ val += 1.0f;
+ }
+ }
+ }
+}
+
+static void test_constants()
+{
+ Tensor<float, 3> mat1(2,3,7);
+ Tensor<float, 3> mat2(2,3,7);
+ Tensor<float, 3> mat3(2,3,7);
+
+ float val = 1.0f;
+ for (int i = 0; i < 2; ++i) {
+ for (int j = 0; j < 3; ++j) {
+ for (int k = 0; k < 7; ++k) {
+ mat1(i,j,k) = val;
+ val += 1.0f;
+ }
+ }
+ }
+ mat2 = mat1.constant(3.14f);
+ mat3 = mat1.cwiseMax(7.3f).exp();
+
+ val = 1.0f;
+ for (int i = 0; i < 2; ++i) {
+ for (int j = 0; j < 3; ++j) {
+ for (int k = 0; k < 7; ++k) {
+ VERIFY_IS_APPROX(mat2(i,j,k), 3.14f);
+ VERIFY_IS_APPROX(mat3(i,j,k), expf((std::max)(val, 7.3f)));
+ val += 1.0f;
+ }
+ }
+ }
+}
+
+static void test_boolean()
+{
+ Tensor<int, 1> vec(6);
+ std::copy_n(std::begin({0, 1, 2, 3, 4, 5}), 6, vec.data());
+
+ // Test ||.
+ Tensor<bool, 1> bool1 = vec < vec.constant(1) || vec > vec.constant(4);
+ VERIFY_IS_EQUAL(bool1[0], true);
+ VERIFY_IS_EQUAL(bool1[1], false);
+ VERIFY_IS_EQUAL(bool1[2], false);
+ VERIFY_IS_EQUAL(bool1[3], false);
+ VERIFY_IS_EQUAL(bool1[4], false);
+ VERIFY_IS_EQUAL(bool1[5], true);
+
+ // Test &&, including cast of operand vec.
+ Tensor<bool, 1> bool2 = vec.cast<bool>() && vec < vec.constant(4);
+ VERIFY_IS_EQUAL(bool2[0], false);
+ VERIFY_IS_EQUAL(bool2[1], true);
+ VERIFY_IS_EQUAL(bool2[2], true);
+ VERIFY_IS_EQUAL(bool2[3], true);
+ VERIFY_IS_EQUAL(bool2[4], false);
+ VERIFY_IS_EQUAL(bool2[5], false);
+
+ // Compilation tests:
+ // Test Tensor<bool> against results of cast or comparison; verifies that
+ // CoeffReturnType is set to match Op return type of bool for Unary and Binary
+ // Ops.
+ Tensor<bool, 1> bool3 = vec.cast<bool>() && bool2;
+ bool3 = vec < vec.constant(4) && bool2;
+}
+
+static void test_functors()
+{
+ Tensor<float, 3> mat1(2,3,7);
+ Tensor<float, 3> mat2(2,3,7);
+ Tensor<float, 3> mat3(2,3,7);
+
+ float val = 1.0f;
+ for (int i = 0; i < 2; ++i) {
+ for (int j = 0; j < 3; ++j) {
+ for (int k = 0; k < 7; ++k) {
+ mat1(i,j,k) = val;
+ val += 1.0f;
+ }
+ }
+ }
+ mat2 = mat1.inverse().unaryExpr(&asinf);
+ mat3 = mat1.unaryExpr(&tanhf);
+
+ val = 1.0f;
+ for (int i = 0; i < 2; ++i) {
+ for (int j = 0; j < 3; ++j) {
+ for (int k = 0; k < 7; ++k) {
+ VERIFY_IS_APPROX(mat2(i,j,k), asinf(1.0f / mat1(i,j,k)));
+ VERIFY_IS_APPROX(mat3(i,j,k), tanhf(mat1(i,j,k)));
+ val += 1.0f;
+ }
+ }
+ }
+}
+
+static void test_type_casting()
+{
+ Tensor<bool, 3> mat1(2,3,7);
+ Tensor<float, 3> mat2(2,3,7);
+ Tensor<double, 3> mat3(2,3,7);
+ mat1.setRandom();
+ mat2.setRandom();
+
+ mat3 = mat1.cast<double>();
+ for (int i = 0; i < 2; ++i) {
+ for (int j = 0; j < 3; ++j) {
+ for (int k = 0; k < 7; ++k) {
+ VERIFY_IS_APPROX(mat3(i,j,k), mat1(i,j,k) ? 1.0 : 0.0);
+ }
+ }
+ }
+
+ mat3 = mat2.cast<double>();
+ for (int i = 0; i < 2; ++i) {
+ for (int j = 0; j < 3; ++j) {
+ for (int k = 0; k < 7; ++k) {
+ VERIFY_IS_APPROX(mat3(i,j,k), static_cast<double>(mat2(i,j,k)));
+ }
+ }
+ }
+}
+
+static void test_select()
+{
+ Tensor<float, 3> selector(2,3,7);
+ Tensor<float, 3> mat1(2,3,7);
+ Tensor<float, 3> mat2(2,3,7);
+ Tensor<float, 3> result(2,3,7);
+
+ selector.setRandom();
+ mat1.setRandom();
+ mat2.setRandom();
+ result = (selector > selector.constant(0.5f)).select(mat1, mat2);
+
+ for (int i = 0; i < 2; ++i) {
+ for (int j = 0; j < 3; ++j) {
+ for (int k = 0; k < 7; ++k) {
+ VERIFY_IS_APPROX(result(i,j,k), (selector(i,j,k) > 0.5f) ? mat1(i,j,k) : mat2(i,j,k));
+ }
+ }
+ }
+}
+
+
+void test_cxx11_tensor_expr()
+{
+ CALL_SUBTEST(test_1d());
+ CALL_SUBTEST(test_2d());
+ CALL_SUBTEST(test_3d());
+ CALL_SUBTEST(test_constants());
+ CALL_SUBTEST(test_boolean());
+ CALL_SUBTEST(test_functors());
+ CALL_SUBTEST(test_type_casting());
+ CALL_SUBTEST(test_select());
+}
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